Preassembled media line

Abstract

A preassembled line for axial engagement with a mating coupling part. The preassembled line includes a line connector having of a connector body with a connecting portion to which a media line is connected and also includes a coupling portion with sealing means for sealing relative to the mating coupling part. The media line is provided with a heating wire arranged on the coupling portion. The connector body, the media line and the heating wire being surrounded at one end by a housing that has a latching part for connecting with the mating coupling part. The latching part is formed on the housing portion surrounding the coupling portion. Sealing of the preassembled media line to the mating coupling part is separated from connecting of the preassembled media line to the mating coupling part and separately performed by the connector body and the housing.

We claim: 
     
       1. A preassembled media line for axial engagement in a direction of insertion (X) with a mating coupling part, the preassembled media line comprising a line connector having a connector body with a connecting portion to which a media line is connected, the connector body also having a coupling portion with a circumferentially extending sealing member thereon for sealing relative to the mating coupling part, the media line being provided with a heating wire also arranged as at least partially on the coupling portion, the connector body and the media line and the heating wire being surrounded at one end by a housing, the housing including a catch on an outer circumference configured to form an interlocked latching connection, the catch being formed on the housing in an area where the housing surrounds the coupling portion, whereby sealing of the preassembled media line to the mating coupling part and connecting of the preassembled media line to the mating coupling part are independently performed by different portions of the connector body and the housing, the connector body being dimensioned such that a plug-in and sealing portion of the coupling portion, which includes the sealing member, projects from the housing and is capable of engaging the mating coupling part, the plug-in and sealing portion of the coupling portion and an introduction portion of the housing having equal outside diameters, the introduction portion adjoining the plug-in and sealing portion and being of circular-cylindrical cross section, the interlocking part of the housing being formed on a rearward end of the introduction portion as seen in an opposite direction to the direction of insertion (X). 
     
     
       2. The preassembled line of  claim 1 , wherein the catch is defined by a latching cam formed on the circumference of the housing, and behind which, in an opposite direction to the direction of insertion (X), a latching groove is formed. 
     
     
       3. The preassembled line of  claim 1 , wherein a circumferential gap portion for accommodating the media line is formed between the housing and the connector body in a region of the connecting portion, and a second circumferential gap portion is formed between the coupling portion and the catch. 
     
     
       4. The preassembled line of  claim 1 , wherein the media line is composed of an inner tube, on a circumference of which the heating wire is arranged, and of an outer protective tube. 
     
     
       5. The preassembled line of  claim 4 , wherein the heating wire is wound in a spiral. 
     
     
       6. The preassembled line of  claim 4 , wherein said outer protective tube is a corrugated tube, the heating wire being fixed on the inner tube by means of an adhesive tape surrounding said wire or being embedded in a layer of plastic, and the housing having on an inner wall, in a region of a circumferential gap portion, circumferential ribs which engage in corrugation troughs of the corrugated tube. 
     
     
       7. A preassembled media line for axial engagement in a direction of insertion (X) with a mating coupling part, the preassembled media line comprising a line connector having a connector body with a connecting portion to which a media line is connected, the connector body also having a coupling portion with a circumferentially extending sealing member thereon for sealing relative to the mating coupling part, the media line being provided with a heating wire also arranged as at least partially on the coupling portion, the connector body and the media line and the heating wire being surrounded at one end by a housing, the housing including a catch on an outer circumference configured to form an interlocked latching connection, the catch being formed on the housing in an area where the housing surrounds the coupling portion, whereby sealing of the preassembled media line to the mating coupling part and connecting of the preassembled media line to the mating coupling part are independently performed by different portions of the connector body and the housing, the connector body being dimensioned such that a plug-in and sealing portion of the coupling portion, which includes the sealing member, projects from the housing and is capable of engaging the mating coupling part, the plug-in and sealing portion having on an outer surface thereof a circumferential groove with the circumferentially extending sealing member arranged therein. 
     
     
       8. The preassembled line of  claim 7 , wherein the catch is defined by a latching cam formed on the circumference of the housing, and behind which, in an opposite direction to the direction of insertion (X), a latching groove is formed. 
     
     
       9. The preassembled line of  claim 7 , wherein a circumferential gap portion for accommodating the media line is formed between the housing and the connector body in a region of the connecting portion, and a second circumferential gap portion is formed between the coupling portion and the catch. 
     
     
       10. The preassembled line of  claim 7 , wherein the media line is composed of an inner tube, on a circumference of which the heating wire is arranged, and of an outer protective tube. 
     
     
       11. The preassembled line of  claim 10 , wherein the heating wire is wound in a spiral. 
     
     
       12. The preassembled line of  claim 10 , wherein said outer protective tube is a corrugated tube, the heating wire being fixed on the inner tube by means of an adhesive tape surrounding said wire or being embedded in a layer of plastic, and the housing having on an inner wall, in a region of a circumferential gap portion, circumferential ribs which engage in corrugation troughs of the corrugated tube. 
     
     
       13. A preassembled media line for axial engagement in a direction of insertion (X) with a mating coupling part, the preassembled media line comprising a line connector having a connector body with a connecting portion to which a media line is connected, the connector body also having a coupling portion with a circumferentially extending sealing member thereon for sealing relative to the mating coupling part, the media line being provided with a heating wire also arranged as at least partially on the coupling portion, the connector body and the media line and the heating wire being surrounded at one end by a housing, the housing including a catch on an outer circumference configured to form an interlocked latching connection, the catch being formed on the housing in an area where the housing surrounds the coupling portion, whereby sealing of the preassembled media line to the mating coupling part and connecting of the preassembled media line to the mating coupling part are independently performed by different portions of the connector body and the housing, the connector body being dimensioned such that a plug-in and sealing portion of the coupling portion, which includes the sealing member, projects from the housing and is capable of engaging the mating coupling part, wherein following on from the plug-in and sealing portion as seen in the direction opposite from the direction of insertion (X), the connector body includes a body portion of reduced diameter relative to a diameter of the plug-in and sealing portion, there being an annular collar on a circumferential surface of the body portion and defining a groove between the collar and the plug-in and sealing portion, the groove receiving therein a retaining extension formed integrally on an inside of the housing at one end thereof. 
     
     
       14. The preassembled line of  claim 13 , wherein an encircling stop for the media line is formed integrally on the connector body between the body portion of reduced diameter and a plug-in spigot formed on the connector body, a gap for passing through the heating wire being formed between an outer circumference of the stop and an opposite inner wall of the housing, and the stop having a polygonal circumferential contour as an anti-rotation safeguard. 
     
     
       15. The preassembled line of  claim 13 , wherein said housing is formed from housing shells. 
     
     
       16. The preassembled line of  claim 13 , wherein the connecting portion is configured to retain the connector body with the media line. 
     
     
       17. The preassembled line of  claim 13 , wherein the catch is defined by a latching cam formed on the circumference of the housing, and behind which, in an opposite direction to the direction of insertion (X), a latching groove is formed. 
     
     
       18. The preassembled line of  claim 13 , wherein a circumferential gap portion for accommodating the media line is formed between the housing and the connector body in a region of the connecting portion, and a second circumferential gap portion is formed between the coupling portion and the catch. 
     
     
       19. The preassembled line of  claim 13 , wherein the media line is composed of an inner tube, on a circumference of which the heating wire is arranged, and of an outer protective tube. 
     
     
       20. The preassembled line of  claim 19 , wherein the heating wire is wound in a spiral. 
     
     
       21. The preassembled line of  claim 19 , wherein said outer protective tube is a corrugated tube, the heating wire being fixed on the inner tube by means of an adhesive tape surrounding said wire or being embedded in a layer of plastic, and the housing having on an inner wall, in a region of a circumferential gap portion, circumferential ribs which engage in corrugation troughs of the corrugated tube.